מִֽי־יִתְּנֵ֣נִי בַמִּדְבָּ֗ר מְלוֹן֙ אֹֽרְחִ֔ים וְאֶֽעֶזְבָה֙ אֶת־עַמִּ֔י וְאֵלְכָ֖ה מֵֽאִתָּ֑ם כִּ֤י כֻלָּם֙ מְנָ֣אֲפִ֔ים עֲצֶ֖רֶת בֹּגְדִֽים׃
어찌하면 내 머리는 물이 되고 내 눈은 눈물 근원이 될꼬 그렇게 되면 살륙 당한 딸 내 백성을 위하여 주야로 곡읍하리로다
Siftei Chakhamim
That you should labor in [studying] Torah. Because it is written “follow” and not “study,” this teaches that you should follow the [intricate] exegesis of the Sages [which requires labor]. (Nachalas Yaakov) Rashi infers this from the word תלכו, as we find the expression הליכה [relating to Torah] in Yirmeyahu (9:1), “Because they left My Torah... and did not walk in it,” and also (55:1), “Ho, all who are thirsty go for water,” which refers to being occupied in Torah.
Rabbeinu Yonah
Hillel says: Do not separate yourself from the community: At the time when the community is involved with Torah [study] and with the commandments, it is the crown of all the worlds and the glory of all of His domain. As 'with many people' that are gathered to fulfill His commandment, it 'is the King's glory'; and [so] it is not fitting to separate from them, as it is stated (Deuteronomy 33:5), "And there is a King in Yeshurun with the gathering." And this is with a community that goes in the good path and gathers to do a commandment. But it is not fitting to attach oneself to a community that leans to the bad path and the deeds of which are corrupted. And one who separates from them, behold, he is praiseworthy. And about this Yirmiyahu the prophet, peace be upon him, stated (Jeremiah 9:1), "Oh, to be in the desert, at an encampment for wayfarers! Oh, to leave my people, to go away from them— for they are all adulterers, a band of rogues."
Ibn Ezra
it is a stoppage [Hebrew: ‘aṣeret] Some say this word means “assembly”, as in “an assembly [Hebrew: ‘aṣeret] of treacherous men” [Jeremiah 9:1] — in that all Israel gathers together for the three festivals. This translation is incorrect, because concerning Passover Scripture says, “on the seventh day there will be an ‘aṣeret ” [Deuteronomy 16:8]; yet earlier Scripture has said, “in the morning you may return to your homes” [Deuteronomy 16:7]. It is more plausible to translate the word along the lines of “detained [Hebrew: ne‘ṣar] before God” [I Samuel 21:8] to denote a respite from wordly concerns. Accordingly, Scripture says, it is a stoppage: you will do no servile work . A similar phrase describes the stoppage on Passover.